CSEC Additional Mathematics · 2018 · Paper 1 · Question Q30
If \sin(x + 20^\circ) = \cos x, then the value of x is
- (A)
35^\circ - (B)
45^\circ - (C)
55^\circ - (D)
70^\circ
The answer is shown once you've answered.
Practise this questionMore practice: the rest of this paper · more Solving Simple Trigonometric Equations questions · all CSEC Additional Mathematics past papers